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Journal of Materials Science and Nanotechnology | Volume: 3
March 20-21, 2019 | London, UK
Materials Science and Materials Chemistry
2
nd
International Conference on
Role of trioctylphosphine on quantum size effect in Ni nanolattice
Gunadhor S Okram
UGC-DAE Consortium for Scientific Research, India
N
ickel nanoparticles are of special interest for their
attractive potential applications in magnetic resonance
imaging, magnetic fluids, catalysts, magnetic recording media,
rechargeable batteries, optoelectronics, conducting paints,
magnetic hyperthermia and other biomedical applications.
When these nanoparticles are dispersed in a liquid medium for
example, they tend to agglomerate/ disperse due to van der
Waals or other attractive forces. Similarly, what kind of forces
theymayneedtoformtheirownperiodiclatticeinsolidstateand
howthiswill influence their overall propertiesmay be intriguing.
We have investigated some of these aspects. They revealed that
trioctylphosphine is responsible for their nanolattice formation,
how the Ni atoms are arranged in these nanoparticles, how
their electronic density of states changes, nearest-neighbour
atoms are changed with particle size and why their quantum
size effect is unique in heat capacity, not in electronic or
magnetic properties. Some of these shall be discussed briefly.
Speaker Biography
Okram has completed PhD from Indian Institute of Technology, Bombay (1995), India. He
has worked at several research institutes including National Institute of Materials Science,
Tsukuba, Japan (1996-98) as STA Fellowbefore joining at UGC-DAE Consortium for Scientific
Research, Indore, India as Scientist D in 2001. He has delivered over 61 invited lectures at
various conferences, published over 210 papers that have been cited 985 times and his
publication H-index is 16 and has been serving as a reviewer of several reputed journals.
e:
okram@csr.res.in